Which instrument is suitable for determining the presence of explosive concentrations of fuel oil vapors in tanks ________．A.A flame safety lampB.A combustible gas indicatorC.A liquid cargo meterD.All of the above

题目

Which instrument is suitable for determining the presence of explosive concentrations of fuel oil vapors in tanks ________．

A.A flame safety lamp

B.A combustible gas indicator

C.A liquid cargo meter

D.All of the above

相似考题

1.The critical path is calculated byA.subtracting the end date of task one from the start date of task two.B.determining which tasks have the least amount of total slack.C.totaling the time for all activities.D.determining the shortest path through the network.E.Determining which tasks have the most slack

2.听力原文：M: If an instrument is payable to the order of both A and B who are not partners, what should they do?W: Both of them must endorse, unless one has authority to endorse for the other.Q: Which of the following is not right according to the woman?(18)A．Both endorse the instrument.B．Neither of them endorses the instrument.C．A authorizes B to endorse the instrument.D．B authorizes A to endorse the instrument.

3.The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the( ).A.flash pointB.fire pointC.upper explosive limitD.lower explosive hmlt

4.● The critical path is calculated byA subtracting the end date of task one from the start date of task two.B determining which tasks have the least amount of total slack.C totaling the time for all activities.D determining the shortest path through the network.E Determining which tasks have the most slack

更多“Which instrument is suitable for determining the presence of explosive concentrations of f ”相关问题

  • 第1题：

    An inert gas system on a tanker should be used to ______.

    A.prevent the generation of flammable or combustible gas in tanks

    B.blow out cargo lines to prevent the build up of gas concentrations

    C.dilute tank atmospheres to keep gas concentrations below the lower explosive limit

    D.prevent fires in the pumproom by continually displacing flammable vapors


    正确答案：C

  • 第2题：

    Which statement is TRUE concerning the flash point of a substance ________．

    A.It is lower than the ignition temperature

    B.It is the temperature at which a substance will spontaneously ignite

    C.It is the temperature at which a substance，when ignited，will continue to burn

    D.It is the temperature at which the released vapors will fall within the explosive range


    正确答案：A

  • 第3题：

    Combustible gas indicators measure the presence of combustible gas as a percentage of the____.

    A.flash point

    B.upper explosive limit

    C.lower explosive limit

    D.fire point


    正确答案：C
    易燃气体检测仪测量存在的易燃气体占爆炸下限浓度的百分比。

  • 第4题：

    Which of the following is not dangerous cargo?（）

    • A、Coal.
    • B、Explosive cargo.
    • C、Flammable cargo.
    • D、Poisonous cargo.

    正确答案:A

  • 第5题：

    单选题
    How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）
    A

    De-energizes the charged mist effect

    B

    Maintains a positive pressure on the vent header to cool the flammable vapors

    C

    Inert gas filters out the flammable vapors from the cargo tank spaces

    D

    Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit


    正确答案： D
    解析： 暂无解析

  • 第6题：

    单选题
    An aneroid barometer is an instrument（）.
    A

    used to measure the speed of wind

    B

    in which the pressure of the air is measured

    C

    that tells which direction a storm is coming from

    D

    used to measure the height of waves


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    Which instrument is used to predict the approach of a low pressure system（）.
    A

    Anemometer

    B

    Fathometer

    C

    Barometer

    D

    Thermometer


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    Which instrument is used to measure the relative humidity of air?（）
    A

    Hydrometer

    B

    Hygrometer

    C

    Spectrometer

    D

    Barometer


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Combustible gas indicators measure the presence of combustible gas a percentage of the（）.
    A

    flash point

    B

    upper explosive limit

    C

    lower expiosive limit

    D

    All of the above


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    Which of the following is not a credit instrument？（）
    A

    Check

    B

    promissory note

    C

    draft

    D

    coin


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    An inert gas system on a tanker should be used to（）.
    A

    prevent the generation of flammable or combustible gas in tanks

    B

    blow out cargo lines to prevent the build up of gas concentrations

    C

    dilute tank atmospheres to keep gas concentrations below the lower explosive limit

    D

    prevent fires in the pumproom by continually displacing flammable vapors


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    The minimum concentration of a vapor in air which can form an explosive mixture is called the（）.
    A

    auto-ignition point

    B

    flash point

    C

    lower explosive limit (LEL)

    D

    threshold limit value (TLV)


    正确答案： B
    解析： 暂无解析

  • 第13题：

    A bill of lading could be which of the following？ ______. ① A contract ② A receipt ③ A negotiable instrument．

    A.I and ③ only

    B.② and ③ only

    C.② and ③ only

    D.①，② and ③


    正确答案：D

  • 第14题：

    Atmospheres laden with coal dust or grain dust caused by loading these cargoes ______．

    A.require loading operations to be shut down until the atmosphere clears

    B.are toxic to human life

    C.are subject to spontaneous combustion

    D.may be explosive in some concentrations


    正确答案：D

  • 第15题：

    In determining a safe speed, the Rules list all of the following as factors which must be taken into account EXPECT the ______.

    A.limitations of radar equipment

    B.presence of background lights at night

    C.maximum horsepower of your vessel

    D.maneuverability of your vessel


    正确答案：C
    在确定安全航速时，规则下列给出的除最大功率外应该考虑下列所有因数。

  • 第16题：

    单选题
    Bacteria which live are said to be aerobic（）
    A

    in the presence of oxygen

    B

    without oxygen

    C

    in the presence of nutrition

    D

    without nutrition


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    Atmospheres laden with coal dust or grain dust caused by loading these cargoes（）.
    A

    require loading operations to be shut down until the atmosphere clears

    B

    are toxic to human life

    C

    are subject to spontaneous combustion

    D

    may be explosive in some concentrations


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    Which instrument is most useful in forecasting fog（）.
    A

    A barometer

    B

    An anemometer

    C

    A sling psychrometer

    D

    A pyrometer


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the （）
    A

    flash point

    B

    fire point

    C

    upper explosive limit

    D

    lower explosive limit


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    Combustible gas indicators measure the presence of combustible gas as a percentage of the（）.
    A

    flash point

    B

    upper explosive limit

    C

    lower explosive limit

    D

    fire point


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    In determining a safe speed（）shall not be among those taken into account.
    A

    the presence of the background light at night

    B

    the state of wind，sea and current

    C

    the number of crew on board

    D

    the draught in relation to the available depth of water


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    Cargoes which（）an explosive, inflammable, poisonous and corrosive nature are called dangerous goods.
    A

    is

    B

    are of

    C

    is of

    D

    are


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    An inert gas system on a tanker should be used to（）.
    A

    prevent the generation of flammable or combustible gas in tanks

    B

    blow out cargo lines to prevent gas concentrations

    C

    dilute tank atmospheres to keep gas concentrations below the lower explosive limit

    D

    prevent fires in the pumproom by continually displacing flammable vapors


    正确答案： D
    解析： 暂无解析

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